https://www.nature.com/articles/s41598-022-12987-8
For roadbeds, here's Canada versus various EU countries, unfortunately US isn't included:
https://international.fhwa.dot.gov/pubs/pl07027/llcp_07_03.c...
This piece starts with 4 different paving approaches, relatively distinct, yet each having ~40 year lifespans (US old and new, France, Germany):
https://www.sciencedirect.com/science/article/pii/S209575642...
The discussion goes into what might we mean by "how good"?
PS. US road builders better hope the measure is never total quality divided by time-to-construct. They'd have some real ground to cover (ahem):
https://www.youtube.com/watch?v=Aw3K_obepyo&t=1s
https://www.nature.com/articles/s41598-022-12987-8
For roadbeds, here's Canada versus various EU countries, unfortunately US isn't included:
https://international.fhwa.dot.gov/pubs/pl07027/llcp_07_03.c...
This piece starts with 4 different paving approaches, relatively distinct, yet each having ~40 year lifespans (US old and new, France, Germany):
https://www.sciencedirect.com/science/article/pii/S209575642...
The discussion goes into what might we mean by "how good"?
PS. US road builders better hope the measure is never total quality divided by time-to-construct. They'd have some real ground to cover (ahem):
https://www.youtube.com/watch?v=Aw3K_obepyo&t=1s